<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>列表排序</title>
    <script src="../js/vue.js"></script>
  </head>
  <body>
    <div id="root">
      <h2>人员列表</h2>
      <input type="text" placeholder="请输入名字" v-model="keyWord" />
      <button @click="sortType=2">年龄升序</button>
      <button @click="sortType=1">年龄降序</button>
      <button @click="sortType=0">原顺序</button>
      <ul>
        <li v-for="(p,index) in filPersons" :key="p.id">
          {{p.name}}-{{p.age}}-{{p.sex}}
          <input type="text" />
        </li>
      </ul>
    </div>

    <script>
      Vue.config.productionTip = false;

      new Vue({
        el: "#root",
        data: {
          keyWord: "",
          sortType: 0, //0代表原顺序 1降序 2升序
          persons: [
            { id: "001", name: "马冬梅", age: 30, sex: "女" },
            { id: "002", name: "周冬雨", age: 44, sex: "女" },
            { id: "003", name: "周杰伦", age: 18, sex: "男" },
            { id: "004", name: "温兆伦", age: 19, sex: "男" },
          ],
        },
        computed: {
          filPersons() {
            const arr = this.persons.filter((p) => {
              return p.name.indexOf(this.keyWord) !== -1;
            });
            //判断一下是否需要排序
            if (this.sortType) {
              arr.sort((p1, p2) => {
                return this.sortType === 1 ? p2.age - p1.age : p1.age - p2.age;
              });
            }
            return arr;
          },
        },
      });
    </script>
  </body>
</html>
